it('props changes', () => {
  cy.visitAndSpyConsole('/#propsChanges', console => {
    expect(console.group).to.be.calledWithMatches([
      {match: 'ClassDemo', times: 5},
      {match: 'Rendered by Main', times: 5},
      {match: /props.*a\W/, times: 4},
      {match: /props.*containerProps\W/, times: 4},
    ]);
  });
});
